The MAC address is for which nic specifically. I.e. The computer I'm going to use it on has two nics and it sits behind a firewall, so there is also the firewall nic that the rest of the world interacts with. Which one?
No. Just one of the NICs on the computer you are installing ES.
So, the domain required is just the domain right (or the computer name or an IP), not the full path to were ES is installed, right? I.e. I install it at www.myapp.com/tools/es, then the domain I need is www.myapp.com, right?
Yes, as specified in the documentation, this is the host name under which the ES is installed and will be reached. For example, we use essample.strataframe.net for our ES sample that comes with the framework.
I might have to install ES to a temporary server, then move it to another one (dedicated just to my app). How big of a pain is it going to be to invalidate the old license file and get a new license file? (I'm trying to just get the decidated machine now, but...)
You will have to contact us when you go to move the license from one machine to another. We do not allow de-activations like in the framework for a number of reasons. It is just a matter of us reseting your account when you move so you can re-activate on the new machine. You activate online through the My Account area and download the license file as opposed to a live activation client.